Table 2.

Prevalence of MCI in different populations in China

Subgroup		Cases	Population	Prevalence (%)
Age
	60-70	2820	28386	9.93(9.59-10.28)
	70-80	3805	20612	18.46(17.93-18.99)
	≥80	1629	6234	26.13(25.04-27.22)
Gender
	male	4356	35483	12.28(11.95-12.61)
	female	6617	51107	12.95(12.66-13.23)
China
	Eastern China	7741	57736	13.41(13.14-13.68)
	Western China	4691	32733	14.33(13.95-14.71)
Region
	Urban	9050	65269	13.87(13.61-14.12)
	Rural	2077	14053	14.78(14.19-15.37)
Method
	screening	8308	54657	15.20(14.91-15.49)
	screening and diagnosis	6832	48249	14.16(13.85-14.47)
Sample Source
	clinical	825	4935	16.72(15.68-17.76)
	nonclinical	14315	97971	14.61(14.40-14.83)

MCI, mild cognitive impairment